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pochemuha
2 years ago
6

Y=-3^x what is the answer

Mathematics
1 answer:
Oksana_A [137]2 years ago
8 0

Answer:

y = 0

Step-by-step explanation:

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What is the equation in slope-intercept form of the linear function represented by the table?
umka2103 [35]

Answer:

y = -x + 9

Step-by-step explanation:

You are given (-5,14), (-2,11), (1,8), and (4,5).  Your first objective is to find the slope.

Slope is delta y divided by delta x - the amount of height the graph gains divided by the amount of horizontal length the graph gains.  Take any two points and plug it into this: \frac{y_{2}-y_{1} }{x_{2}-x_{1}}.

i.e. (-2,11) and (4,5): \frac{11-5}{-2-4} which is \frac{6}{-6}, or -1.  Thus, the slope is -1.

We now have y = -1(x) + b, or just y = -x + b.

Next, find the y-intercept.  Set the value of x to 0, as the y-intercept is found along the y-axis, which is at the horizontal center of the graph, 0.  We now know that the y-intercept is (0,y).  To find the y-value, plug one of the coordinate pairs of choice into x and y.

i.e. (-5,14): 14 = (-1)(-5) + b

14 = 5 + b

14 - 5 = 5 + b - 5

9 = b

So, the y-intercept is (0,9).

Finally, the equation is:

y = -x + 9

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2 years ago
A Boston subway train traveling at constant speed traveled 10.1 miles in half an hour. What was the speed of the subway train? m
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Answer: 20.2 mph

Step-by-step explanation:

Given

Train travels 10.1 miles in half an hour i.e.

Distance d=10.1\ \text{miles}

time t=0.5\ hr

we know, \text{distance=speed}\times\text{time}

Insert the values

\Rightarrow 10.1=v\times 0.5\\\Rightarrow v=20.2\ mph

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A number is positive if it is greater than or equal to zero. A number is negative if it is less than or equal to zero.

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